On 06.03.2018 04:24, lukasz139 wrote:
Is there any smart way to investigate that? Checking if any firewall on  my
way blocks?

The best thing you can do when developing ethernet devices is to get yourself a TAP to see what your device sends and receives. If buying one is too expensive, build one yourself (search for "diy passive network tap" or something like that). Then you can see what's going on.

Next step is to test the device with hardware you control. That should ensure no firewall on the way blocks.


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